Hello.
I stumbled on a problem that caused me fair amount of frustration and I suspect that it could affect other users who start using tools.namespace. The problem is that clojure.code/ns macro is more lenient than what follows from it’s documentation. For example ‘use’ (or require) clause in vector is accepted e.g. “[:use ....]” (see http://dev.clojure.org/jira/browse/TNS-21) or use clause with plain symbol (not keyword) is also OK, e.g. “(use ....)" (as in my case http://dev.clojure.org/jira/browse/TNS-30). And the way ns macro is expanded section in form “(aaaa ....)” would be replaced with “(clojure.core/aaaa ... )”. However tools.namespace parses dependencies strictly according to doc. E.g.TNS-21 was closed as won’t fix for that reason. This way there could be ns declarations that have no compilation errors and work as one may think but are ignored by c.t.n’s parser. Hence there could be actual dependencies that are silently ignored without any error or warning. It seems that proper way to resolve this would be to rewrite ns macro to be more strict and accept only what’s described in documentation. But I suspect that this would lead to backward compatibility issues - some of existing code will break. There is also possibility to rewrite clojure.tools.namespace.parse/deps-from-ns-decl so it does macroexpand and then looks for references to clojure.core/refer, clojure.core/require and clojure.core/use. This would match now ns actually works but one might not like this “implementation as specification”. So I think that the good solution for now would be to have some validation function forns form. This function would issue a warning when some parts of namespace declaration could be ignored. This way unexpected behavior of clojure.tools.namespace.repl/refresh would not go unnoticed and this will make this library more user-friendly. What do you think would be a good solution for this? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
